Steering-wheel lock



S. D. AND R. D. MARR. STEERING WHEEL LOCK.

APPLICATION FILED 9120.10. 1919.

1,381,726. Patented June 14, 1921.

ex g 25 UNITED STATES PATENT, OFFICE.

STUART DUNCAN Mam AND ROBERT nuoxn'r'r MARE, OFBALHAM; LONDON,

I I ENGLAND. I I

STEERING-WHEEL Lock.

Specification of Letters Patent.

' Patented June 14., .1921.

Application filed December 10, 1919'. serial No. 343, 883.

To all whom it may concern Be it known that we, STUART DUNCAN MARK andROBERT. DUCKETT MARR, subjects of the King of Great Britain, residing atBalham, London, England, have invented I certain new anduseful'lmprovements in Steering-Wheel Locks, of which the following is aspecification. J

The object. of this invention is to construct an appliance for lockingthe steering wheels of road motor vehicles to prevent such vehiclesbeing stolen, the appliance being affixed to or formed with the steeringcolumn and'having a member capable of engaging the spokes or arms or theboss of the steering wheel and being locked in that position so as toprevent the steering of the vehicle. I I

For the purpose of ourinventionwe construct a box like applianceaflixable to or formed with the steering column, such box containing oneend of a member adapted to engage, some of the spokes or arms or theboss of the steering wheel or the controls when the steering columnrevolves. "When the controls and steering column revolve such member mayengage a clipordevice on the dashboard or other part of the vehicle,

the member being locked in place while engaging the steering wheel orother part and being capable of release either automatically or by handafter operation of a device capable ofpreventing access to the member orallowing access thereto. I I

Our invention will be clearly understood from the following descritionaided by the annexed drawings in which Figure 1 is a horizontalsection of the easing or box and door but not showing the operableparts.

b Fig. 2 is a plan view of the locking mem- Fig. 3 is a side elevationof a complete device with parts broken away to show the door in closedposition.

Fig. 4 is a section on the line a a of Fig. 3 when viewed from the leftFig. 1.

Fig. 5 is a view partly in section and partly in elevation of a steeringwheel and column having our appliance attached thereto, the steeringwheel being shown in locked position and the steering column being shownas of the fixed type.

passes through the bottom shown inFigs. 3 and 4. I TheT member iscontrolled and normally held in lowered or unlocked In simple form. andas shown our appliance is constructed as follows:

We form a box like device 1, to one side of which we secure a'clip 2thescrews3, 3 utilized for this purpose being applied inside the box .1 anddo not extend outside the clip, as shown in Fig. 1. The box end and theclip are so shaped as toencircle the steering columnl and the screws 3causing the box 1 andclip 2 to grip. the steering column 4 butsuch ibox11 may form part of the steering column if so desired.

We construct a bolt or lever member 5 somewhat'of T shape thearms 6, 6being curved and having a slot or groove 7 cut at about thecenter of theupper edge while the leg 8 is formed with a cutaway portion 9 forming aledge 10 on one side', and a recess ll'isiformed; nearthe bottom oftheleg 8.

..The arm'sTG project outside the box 1 and the leg -8 is positionedwithin it and also of the. box as position by a spring 12 secured to thebox 1 by a screw 13 and acting between a wall of the box 1 and a screw14 "onthe leg 8. I

Inside lthe box we' position a stop. 15 which engages theiledge-lOoftheTmember 5 to limit the lowering movement ofithe latter and to thisestop:15 we-pivot a bent or-L shaped lever 16, one arm of which is providedwith; a ,slot 17 engaging'apinl8 on a sllding. piece. 19.-

Thesliding piece 19 is acted upon by a spri11gx20to normally-press thesliding piece 19 toward the leg 8 of the T member 5, while the other arm21 of the L lever 16 has a right angled projection 22.

A door 23 is pivoted to the bottom or one end of the box 1, the pivots24:, 24 being so constructed and applied that they cannot be removedfrom outside the box by any ordinary tool. In the present instance theyare shown as held in place by grub pins 25, 25, the pins having theirends flush with the outside of the box, and the door 23 is provided witha nose 26 which, during the opening movement of the door, acts upon theright angled extension 22 on the Llever and rocks same thus acting uponthe sliding piece 19. The door is provided with a lock, operated by akey 28, to lock it and prevent access to the T member 5 except by theproper key .or secret means. w 1

When the T member 5 is lowered the steering wheel is free the springcontrolling means1f2 holding it free, while "the sliding piece 19normally presses against the 'leg'8 of the T member 5. Now to lock thesteering wheel as shown in Fig. 5, the T piece '5 islifted in order thatthe arms Smayengage the boss of the wheel with the slot or groove 7embracing one arm orispoke while the arms 6 will engage the arms orspokes on each side. In this position thewspring 20 will pushthezsliding piece 19 into the recess 11 the leg 8 0i the T'imemher 5*soas to hold the T member :in raised position and ,look the steering wheel27, the door being held locked during this movement. To release theTtmember 5 from the steering wheel:27 the door 23 is opened and duringits opening :movement "its nose will act'upon the right angled extension22 of the L lever, rock same about its :pivot and withdraw the slidingpiece 19 fromthe recess 11 in the le 8 of :the T member 5. The :sprin12' wil then lower the .T member 5 'auntil t e .shou'lder 1O ionthe leg:8 engages thezstop 15when the'zsteering wheel 27 will be free.

What we do claimas iOuI invention rand-(lee sire tozsecurby LettersPatent, is

'1. An appliance .:for "locking the steering wheels of motor vehiclescomprisingai'casing associated 1th thel-steering column of the vehicle,a locking member movably mounted within the casing and adapted to engagethe steering wheel, means for locking the :mov-

able member when it is in engagement with "the steering wheel, :a doorpivoted to said berfrom engagementwith the steering wheel, and means forlocking the vdoorfin :closed casing and adapted when in closed positionto conceal said locking member and locking means, said door having meansac'ting when;

it is beingopenedto release the lockingmemposition.

' 2. Anappliance for locking the steering wheels of motor vehiclesconsisting of a casing associated with the steering column oi a closedposition.

a sliding spring-controlled member in the casing-adapted to engage therecessed portion of the bolt member, a pin projecting from said slidingmembeiyxan *L-sha'ped lever pivoted in the casing, one :end of saidlever be- :ing in engagement'with thezpin onthe sliding :member and the:other end formed with an angle projection, a door 'apivotedvtothe'casing and adapted toclose one side thereof and formed with :a nosepiece positioned tdengage said angle projectionand therebyoperate thezL-lever upon opening movement of the :door, :and means for lockingsaiddoor in 3. YA device tori-locking :the steering wheel :of a 'vehiclecomprising a casing, :a door hingedin -sa1d=cas1ng, means dor attaching"said ecasi'ng to the ;steering column rof ithe vehicle, aboltimenibenmounted' :in said casing, asaid tbolt member being :adaptedin raised 1 position to engage the steering wheel, a

spring for normally maintaining saidibolt in "lowered position, asliding member for look- .ing said bolt in elevated position, a lever,adapted'to control'theamovement of saidzslidain g'membe-r,means carriedby said door and :by said lever to release said-sliding member fromlockingengagement with theibolt when the door isropenedflndmeans forlocking the door in .clo'sed'position. v

In testimony whereof we have hereunto set nesses p STUART 'DUNOANMARR.

ROBERT DUCKETT MARE,

Witnesses v iPnRoY E. MA'rroona.

ourhan ds :in' presence of itwo -slibscribing wit-

